Medellin used to be the murder capital of the world. Today, new businesses, plazas, libraries and schools can be seen throughout the city's hillside neighborhoods. An aerial tram system is at the heart of Medellin's transformation.

Spotlight

Integrating Green and Gray: Next-Generation Infrastructure

Green infrastructure like forests, wetlands and coral reefs can improve the performance of traditional “gray infrastructure” like dams and water treatment plants. A new WRI/World Bank paper explains how.

This report explores how integrating nature into built, gray infrastructure systems can help provide services like food, flood protection, and clean water. These green solutions can open new opportunities for financing, and boost resilience to climate change.

Medellin used to be the murder capital of the world. Today, new businesses, plazas, libraries and schools can be seen throughout the city's hillside neighborhoods. An aerial tram system is at the heart of Medellin's transformation.

This Month in Climate Science summarizes significant new research and gives a clearer picture of the threats posed by climate change. Studies published in February 2019 reveal the first mammal extinction caused by climate change, shifting bird migrations, disintegrating clouds and more.